One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(6,7)(9,10,15,17)(11,14,12,16)(13,18,22,24)(19,21,20,23)(25,26)(27,35)(28,36)(29,33)(30,38)(31,32)(34,37)(39,40)(1,2,5,4)(3,7,8,6)(9,11,15,12)(10,16,17,14)(13,20,22,19)(18,21,24,23)(25,27,31,36)(26,28,32,35)(29,37,39,30)(33,38,40,34)(1,3,5,8)(2,6,4,7)(10,17)(11,12)(18,24)(19,20)(26,32)(28,35)(33,40)(34,38)(1,4,5,2)(3,7,8,6)(9,12,15,11)(10,14,17,16)(13,20,22,19)(18,21,24,23)(25,28,31,35)(26,27,32,36)(29,38,39,34)(30,33,37,40)(9,13)(10,18)(11,19)(12,20)(14,21)(15,22)(16,23)(17,24)(25,29,31,39)(26,33,32,40)(27,30,36,37)(28,34,35,38)(9,14)(10,11)(12,17)(13,21)(15,16)(18,19)(20,24)(22,23)(25,30)(26,34)(27,29)(28,33)(31,37)(32,38)(35,40)(36,39) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.